120 tools · graded · free

Tools. Get things done.

Every betting and casino math tool we ship, on one graded shelf. No login, no affiliate money.

All 120 tools

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SIMULATION

SIMULATIONPopular

Martingale Simulator

Simulate thousands of martingale progression sessions against table limits, bankroll constraints, and house edge.

Simulation
Roulette
Crash

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FIBONACCI

FIBONACCITool

Betting Strategy Lab

Compare Fibonacci, D'Alembert, Labouchere, Paroli, 1-3-2-6, Oscar's Grind, and more. Run Monte Carlo sims across all popular betting systems side by side.

Fibonacci
D'Alembert
Paroli

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PROGRESSION

PROGRESSIONTool

Strategy Progression Calculators

Step-by-step calculators for Martingale, Fibonacci, D'Alembert, Labouchere, Paroli, and Oscar's Grind. See exactly where each progression takes your stake and why none of them beat the house edge.

Progression
Martingale
Fibonacci

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SESSION

SESSIONTool

Session Outcome Simulator

Given house edge, bet size, and session length — what's the probability of being ahead? Answers "can I realistically win tonight?" with math.

Session
Probability
Simulation

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KELLY

KELLYTool

Staking Plan Comparator

Compare flat, percentage, Kelly, Fibonacci, and square root staking strategies with Monte Carlo simulation. See which plan fits your edge and risk tolerance.

Kelly
Fibonacci
Monte Carlo

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GROWTH

GROWTHTool

Bankroll Growth Visualizer

Watch your bankroll evolve over time with interactive growth simulations. Compare compound growth across strategies with fan charts and percentile bands.

Growth
Compound
Visualization

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SESSION

SESSIONTool

Session Planner

Plan casino sessions with realistic expectations. Set win goals and stop-losses, run 10K Monte Carlo simulations, see probability of hitting targets.

Session
Monte Carlo
Win Goal

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BUST

BUSTTool

Bust Calculator & Simulator

Calculate bust probability and simulate bonus clearing with Monte Carlo. Kelly Criterion, Risk of Ruin, expected value, and outcome distribution over thousands of runs.

Bust
Risk of Ruin
Kelly

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DICE

DICETool

Bust Probability Calculator

Calculate the probability of going bust given your bankroll, bet amount, and house edge. Understand your risk of ruin across different session lengths.

Dice
Crash
Roulette

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SPORTS

SPORTSPopular

Expected Value Calculator

Calculate the EV for any bet using your estimated win probability and offered odds. See whether a wager has positive or negative long-term expectation.

Sports
Casino
Poker

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BET SIZING

BET SIZINGPopular

Kelly Criterion Calculator

Determine the mathematically optimal bet size based on your edge. Maximizes long-term bankroll growth while minimizing risk of ruin, with fractional Kelly options.

Bet Sizing
Bankroll
Edge

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BANKROLL

BANKROLLTool

Bankroll Management

How long will your bankroll last? Input bet size, RTP, and rounds per hour to see session survival probability, optimal unit sizing, and when to walk away.

Bankroll
Sessions
Risk

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RECOVERY

RECOVERYTool

Drawdown Recovery Calculator

After losing X%, how much do you need to win to recover? Lose 50% and you need 100% gain. Visualize the asymmetry of losses vs. gains.

Recovery
Loss
Drawdown

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STREAKS

STREAKSTool

Streak Probability Calculator

What are the odds of a 10-game losing streak? Calculate streak probabilities for any length, win rate, and sample size. Essential for understanding variance.

Streaks
Variance
Probability

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IMPLIED

IMPLIEDTool

Implied Probability Calculator

Convert odds into true implied probabilities. Remove the overround from multi-outcome markets and find +EV bets where your estimate exceeds the line.

Implied
Probability
Overround

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FALLACY

FALLACYTool

Gambler's Fallacy Demo

Interactive demonstration of the gambler's fallacy. Flip coins, spin wheels, and see why past results don't affect future probabilities — with real-time statistics.

Fallacy
Interactive
Education

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AMERICAN

AMERICANPopular

Odds Converter

Convert between American, Decimal, Fractional odds and Implied Probability instantly. The most essential tool for any sports bettor.

American
Decimal
Fractional

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PARLAY

PARLAYPopular

Parlay Calculator

Build multi-leg parlays and see total odds, combined implied probability, and exact payout. Input up to 15 legs in any odds format.

Parlay
Accumulator
Multi-Leg

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PARLAY

PARLAYTool

Parlay Probability Visualizer

See exactly how parlay probability drops exponentially as legs are added. Interactive chart reveals why sportsbooks love parlays — and why most bettors lose.